E-8 V.5 D4 - Sundown Audio 8" 300W RMS Dual 4-Ohm EV.5 Series Subwoofer Xmax = 14mm one-way by 70% BL | RMS Power = 300-watts Vented magnetic gap | Solid Pole piece with chamfered edges for increased air powered voice coil cooling Black Aluminum 2 voice coil former for superior heat dissipation | High Temperature copper voice coil wire Spring Loaded Terminals | Stitched-On Tinsel Leads to prevent fatigue and failure High strength stamped steel frame | Optimized for small, ported enclosures